SAN DIEGO — Giants right-hander Joe Martinez remained in an intensive care unit Saturday as doctors continued to monitor the skull fractures and subdural hematoma he sustained when a line drive hit him on the forehead Thursday.

A CT scan showed that internal bleeding had not worsened. If another CT scan today shows improvement, Martinez would be moved out of intensive care and remain hospitalized for two or three more days, Giants trainer Dave Groeschner said.

Martinez will be restricted from physical activity for one month, meaning he probably won’t pitch again until late May at the earliest.

If Martinez is anything like Padres right-hander Chris Young, the mental scars shouldn’t take long to heal. Young fractured his skull last May when an Albert Pujols line drive hit him between the eyes. When Young returned to the mound in late July, he followed the advice of teammate Greg Maddux.

“Think of it as a one-in-a-million chance, and your one is used up,” Young said. “You can’t go out there anticipating it’ll happen again.”

Rather than being hesitant to release a pitch, Young said the incident made him more aggressive.

“I told myself I’d really attack hitters inside more,” Young said. “The pitch (Pujols hit) was a slider down and away, and if he could stay balanced and hit it back up the middle, that told me he wasn’t aware of the inside pitch.”

Giants manager Bruce Bochy said he might put Martinez in touch with Young; the Padres pitcher said he’d be glad to offer his insights.

Going to Dallas

The Giants added some insurance at the corner spots, signing power-hitting infielder Dallas McPherson to a minor league contract. McPherson will be assigned to Triple-A Fresno after getting a few days’ worth of at-bats at extended spring training, Giants vice president Bobby Evans said.

A one-time top prospect with the Angels, McPherson hit 42 home runs for the Florida Marlins’ Triple-A club in Albuquerque last season. Evans said McPherson will battle for at-bats because Fresno already has Ryan Rohlinger at third base and Jesus Guzman learning to play first base.

No rest

Bochy plans to start catcher Bengie Molina today, even though it’s a day game after a night game. The club’s only backup catcher is starting third baseman Pablo Sandoval, although outfielder Andres Torres has been catching pitchers in the bullpen.

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